AFM of a thin film of a block copolymer

afm-of-a-thin-film-of-a-block-copolymerAFM of a thin film of a block copolymer – a molecule with a long section that can crystallise (polyethylene oxide), attached to a shorter length of a non-crystallisable material (poly-vinyl pyridine). What you can see is a crystal growing from a screw dislocation. The steps have a thickness of a single molecule folded up a few times.

 

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